Eaton Magnum DS - CT Metering Accuracies; Voltage Transformers; Control Power Transformers

Technical Data
Effective: May 1998 Page 9
TD.44A.01.T.E
Cutler-Hammer
Magnum DS
Metal-Enclosed
Low-Voltage Switchgear
Ratings
Table R13 – Metering Type Current Transformers for Mounting in Circuit Breaker Compartments
ANSI Meter Accuracy Classification
Breaker Frame Rating Ratio Ratio B-0.1 B-0.2 B-0.5 B-0.9 B-1.8
800, 1600, 2000 100/5
150/5
200/5
250/5
300/5
400/5
500/5
600/5
750/5
800/5
1000/5
1200/5
1500/5
1600/5
2000/5
100/1
150/1
200/1
250/1
300/1
400/1
500/1
600/1
750/1
800/1
1000/1
1200/1
1500/1
1600/1
2000/1
2.4
1.2
1.2
0.6
0.6
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
—
2.4
2.4
1.2
0.6
0.6
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
—
—
2.4
2.4
1.2
1.2
0.6
0.6
0.3
0.3
0.3
0.3
0.3
0.3
0.3
—
—
—
—
2.4
1.2
1.2
1.2
0.6
0.6
0.6
0.6
0.6
0.6
0.6
—
—
—
—
—
—
2.4
1.2
1.2
1.2
0.6
0.6
0.6
0.6
0.3
3200 1600/5
2000/5
2400/5
2500/5
3000/5
3200/5
3500/5
4000/5
1600/1
2000/1
2400/1
2500/1
3000/1
3200/1
3500/1
4000/1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.6
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.6
0.6
0.3
0.3
0.3
0.3
0.3
0.3
1.2
0.6
0.6
0.3
0.3
0.3
0.3
0.3
4000 4000/5 4000/1 0.3 0.3 0.3 0.3 0.3
5000 5000/5 5000/1 Refer to Cutler-Hammer
Current transformers with meter accuracy classifications at higher burdens and/or suitable for relaying are also available. They will be
mounted in the rear cable connection compartment.
Table R14 – Voltage Transformers
Insulation Class is 600 volt dielectric, 10 kV full wave BIL. Accuracy
Class is 0.6 for W and 1.2 for X burderns at 60 Hz. Thermal ratings
are 150VA @ 300
° C and 100 VA @ 55 ° C. Primary and secondary
fuses are mounted on the face of the VT.
Available Standard Ratios: 120:120
240:120
288:120
480:120
600:120
Table R15 – Control Power Transformers
Insulation Class is 600 volt dielectric. Primary and secondary fuses
are mounted on the face of the CPT. An optional primary fuse cover
is available. 1kVA, 2 kVA, 3 kVA and 5 kVA ratings are available as
standard.
Available Standard Ratios: 208:120/240
240:120/240
480:120/240
600:120/240
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